CN101766854B - Bubble detection device for infusion pipeline - Google Patents
Bubble detection device for infusion pipeline Download PDFInfo
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- CN101766854B CN101766854B CN 200810246777 CN200810246777A CN101766854B CN 101766854 B CN101766854 B CN 101766854B CN 200810246777 CN200810246777 CN 200810246777 CN 200810246777 A CN200810246777 A CN 200810246777A CN 101766854 B CN101766854 B CN 101766854B
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- infusion pipeline
- detection device
- side wall
- receiving terminal
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Abstract
The invention provides a bubble detection device for an infusion pipeline, comprising a body, a pressing-in part and a detection control circuit, wherein the body is provided with a center channel which is limited by a first side wall, a second side wall and a base, and the first side wall and the second side wall are opposite; the side surface of the first side wall is provided with the input end of ultrasonic signals, and the side surface of the second side wall is provided with the receiving end of the ultrasonic signals; the pressing-in part can press the infusion pipeline in the center channel; and the detection control circuit is connected with the input end and the receiving end to judge whether bubbles exist in the infusion pipeline. Particularly, the base is provided with a groove in the position corresponding to the input end and the receiving end along the direction of the infusion pipeline. Accordingly, when the device is used for detecting the infusion pipeline, the inferior of the infusion pipeline is air medium rather than solid medium, and the ultrasonic signals are avoided to be conducted to the receiving end from the solid medium of the inferior of the infusion pipeline to cause the condition having the bubbles and no alarming.
Description
Technical field
The present invention relates to medical instruments field, be specifically related to a kind of bubble detection device for the clinical transfusion pipeline.
Background technology
In the clinical practice infusion pipeline carries out therapeutic process to the patient, must accurately, effectively detect the bubble in infusion pipeline, to guarantee patient's life security.In clinical use in early days, mostly adopt infrared air bubble sensor to survey bubble, because being utilizes itself absorbance difference in liquids and gases to detect bubble, therefore when at blood transfusion and defeated colored liquid, the too responsive meeting generation of this detection mode false alarm.
Now, mostly adopt sonac to survey bubble, utilize the efficiency of transmission difference of ultrasound wave in different medium to judge whether there is bubble in infusion pipeline.For example, shown in seeing figures.1.and.2, they are respectively the structural representations that existing bubble detection device is in unlatching (off working state) and closure state (duty).This device mainly comprise infusion pipeline briquetting 1, housing 3 and be arranged on signal input part 7 in housing 3 ' and signal receiving end 5 ', wherein infusion pipeline 2 can be pressed in the sidewall 12 of housing 3 and the central passage 14 between sidewall 13 (as shown in Figure 2) by infusion pipeline briquetting 1.Therefore can be by at input 7 ' making alive, then through survey after ultrasonic conducting receiving terminal 5 ' voltage, according to whether having bubble in judging infusion pipeline by circuit liquid is different with airborne output voltage.With reference to Fig. 3 and Fig. 4, be respectively existing bubble detection device signal input part 7 ' and signal receiving end 5 ' schematic diagram.
Therefore the not impact of liquid body color of existing ultrasonic bubble sniffer is compared with infrared detection device and is had certain improvement, but still there are some problems in it.At first, the efficiency of transmission due to ultrasound wave in solid dielectric is higher than air, therefore in alveolate situation, input signal be easy to from the solid dielectric of central passage 14 bottoms conduct to receiving terminal 5 ', thereby caused bubble and alarm-free situation; Secondly, signal input part 7 ' and signal receiving end 5 ' be circular superconduction paster, efficiency of transmission is lower, easily produces false alarm; In addition, the detection control circuit of existing bubble detection device can't in real time, accurately survey whether there is bubble in infusion pipeline, therefore may cause a hidden trouble.
Summary of the invention
The present invention is devoted to just to overcome the defects of prior art and makes.The object of the invention is to propose a kind of bubble detection device for the clinical transfusion pipeline.When using this device to detect infusion pipeline, the below of infusion pipeline is for air dielectric completely but not therefore solid dielectric has avoided ultrasonic signal to conduct to receiving terminal and caused bubble and alarm-free situation from the solid dielectric below pipeline.
For solving the problems of the technologies described above, the invention provides a kind of bubble detection device for infusion pipeline, comprise: body, have by relative the first side wall be connected sidewall and connect the first side wall and central passage that the base of the second sidewall limits, have the receiving terminal that has ultrasonic signal on the side away from passage of the input of ultrasonic signal and the second sidewall on the side away from central passage of the first side wall; Be pressed into section, infusion pipeline can be pressed in central passage, liquid-transport pipe-line is by base support; And detection control circuit, connect input and receiving terminal to judge whether there is bubble in infusion pipeline, especially, when infusion pipeline is pressed into central passage, infusion pipeline relative with input and receiving terminal respectively with contacted two sidewalls of central passage, base is along having groove in the position corresponding to input and receiving terminal on the direction of infusion pipeline.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, the length of groove greater than input and receiving terminal along the length on the infusion pipeline direction.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, detection control circuit comprises ultrasonic signal generating unit, ultrasonic signal receiving element and main control chip, wherein, input connects the ultrasonic signal generating unit, and receiving terminal connects the ultrasonic signal receiving element, and the ultrasonic signal receiving element transfers to main control chip with the signal that receives.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, detection control circuit also comprises circuit protection unit, damages main control chip to prevent the excessive or backward voltage of electric current.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, input and receiving terminal are rectangular superconduction paster.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, the thickness of the first side wall and the second sidewall is and is not more than 0.4mm.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, the first side wall and the second sidewall all adopt the process of surface treatment of meticulous polishing, with strengthen between input and the first side wall coordinate and receiving terminal and the second sidewall between coordinate.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, input affixes to the first side wall, and receiving terminal affixes to the second sidewall.
Preferably, according to the bubble detection device for liquid-transport pipe-line of the present invention, wherein, the bottom of body has the installing card that matches with fixing liner plate.
The present invention has following technique effect:
The first, adopt unique groove design according to the below of bubble detection device central passage of the present invention, can effectively stop input end signal to conduct to signal receiving end (being receiving terminal) from the infusion pipeline lower end, avoided bubble and do not reported to the police;
The second, adopt rectangular superconduction paster, can improve the efficiency of transmission of ultrasonic signal;
The 3rd, adopt novel thin-walled design and process of surface treatment, both prevented from there is no bubble and false alarm obviously improves efficiency of transmission;
The 4th, use the built-in detection control circuit of MEC (microcircuit controller), improved the accurate detection to bubble situation in pipeline;
The 5th, adopt the installing card structure, guaranteed the stability of fit clearance.
Should be appreciated that, above generality is described and the following detailed description is all enumerated and illustrative, and purpose is for to the claimed further instruction that the invention provides.
Description of drawings
Accompanying drawing forms the part of this description, with helping further understand the present invention, in the accompanying drawings:
The bubble detection device that Fig. 1 shows prior art is in the structural representation of unlatching (off working state);
The bubble detection device that Fig. 2 shows prior art is in the structural representation of closure (duty);
Fig. 3 shows the structural representation of signal input part of the bubble detection device of prior art;
Fig. 4 shows the structural representation of signal receiving end of the bubble detection device of prior art;
Fig. 5 shows the structural representation that bubble detection device according to the preferred embodiment of the invention is in unlatching (off working state);
Fig. 6 shows the structural representation that bubble detection device according to the preferred embodiment of the invention is in closure (duty);
Fig. 7 shows the thin-walled of bubble detection device and the schematic diagram of groove according to the preferred embodiment of the invention;
Fig. 8 shows the structural representation of the signal input part of bubble detection device according to the preferred embodiment of the invention;
Fig. 9 shows the structural representation of the signal receiving end of bubble detection device according to the preferred embodiment of the invention;
Figure 10 shows the built-in detection circuit of MEC of bubble detection device according to the preferred embodiment of the invention.
The specific embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.It should be noted that hereinafter only the present invention's feature unlike the prior art to be described, for the technical characterictic that can find in the prior art, just do not given unnecessary details here.
At first with reference to Fig. 5, show the structural representation that bubble detection device according to the preferred embodiment of the invention is in unlatching (off working state).As can be seen from Figure 5, the bubble detection device of this infusion pipeline, comprise: body 3, have the central passage 15 that is limited by relative the first side wall 17 and the second sidewall 16 and base 20, the first side wall 17 has the receiving terminal 5 of ultrasonic signal on the side away from passage 15 at the input 7 that has ultrasonic signal on the side away from central passage 15 and the second sidewall 16; Infusion pipeline briquetting 1 (namely being pressed into section) has and infusion pipeline 2 can be pressed into the projection 11 of central passage 15; Detection control circuit 8 is connected in input 7 and receiving terminal 5 to judge whether there is bubble in infusion pipeline 2 by wire, in connection with Figure 10, this detection control circuit 8 is described in detail in the back; Groove 6 (referring to Fig. 7) is formed on the downside of central passage 15; And installing card 4,9, this is stuck in fixedly on liner plate 10 installing card 4,9, has guaranteed the stability of fit clearance.
In Fig. 5, infusion pipeline briquetting 1 is not pressed into infusion pipeline 2 in central passage 15, is complete air dielectric state between signal end input 7 and signal receiving end 5, does not consist of temporarily and surveys the bubble pipeline, and this moment, the infusion pipeline sniffer was off working state.
Below with reference to Fig. 6, show the structural representation that bubble detection device according to the preferred embodiment of the invention is in closure (duty).In Fig. 6, infusion pipeline briquetting 1 compresses infusion pipeline 2, and signal input part 7 and signal receiving end 5 form surveys the bubble pipeline; With the common system that consists of the Real-Time Monitoring pipeline of detection control circuit 8, guarantee to break down at detection bubble pipeline, in time trigger alarm simultaneously.Should be noted that groove 6 can form complete air dielectric isolation strip for 2 times at infusion pipeline, stop signal to be transmitted to signal receiving end 5 by signal end input 7 from here and forms closed duct, have the initiation false alarm thereby be mistaken as bubble.
With reference to Fig. 7, show the thin-walled of bubble detection device and the schematic diagram of groove according to the preferred embodiment of the invention, base 20 is along having groove 6 in the position corresponding to input 7 and receiving terminal 5 on the direction of infusion pipeline, namely the downside in central passage 15 has formed groove 6, preferably, the length of groove 6 greater than input 7 and receiving terminal 5 along the length on the infusion pipeline direction.In addition, in the present embodiment, the first side wall 17 and the second sidewall 16 are the thin-walled design that is not more than 0.4mm and the process of surface treatment that adopts meticulous polishing, thereby make input 7 and the first side wall 17 reach that gapless coordinates and receiving terminal 5 reaches gapless with the second sidewall 16 and coordinates, so both prevented from there is no bubble and false alarm obviously improves efficiency of transmission.
With reference to Fig. 8 and Fig. 9, show respectively the signal input part 7 of bubble detection device and the structural representation of signal receiving end 5 according to the preferred embodiment of the invention.In Fig. 8, in signal end input 7 and Fig. 9, signal receiving end 5 is for adopting the rectangle paster, and their efficiency of transmission is better than the efficiency of transmission of the circular patch of signal input part 7 ' and signal receiving end 5 ' in Fig. 3.
With reference to Figure 10, detection control circuit 8 is described in detail.This detection control circuit 8 mainly comprises ultrasonic signal generating unit, ultrasonic signal receiving element, circuit protection unit and main control chip; wherein; input 7 connects the ultrasonic signal generating unit; receiving terminal 5 connects the ultrasonic signal receiving element, and the ultrasonic signal receiving element transfers to main control chip with the signal that receives.
Particularly, producing crest by crystal oscillator is 2V, trough is 0V, 2MHz class square-wave signal, make signal become square wave through capacitance C9, passing to Q5 and Q13 formation amplifying circuit amplifies, (Q5, Q13 do not open when trough is inputted to open Q5 when crest is inputted, signal is low level, can't produce ultrasonic signal), the voltage that the Q5 colelctor electrode is produced about 3V is opened Q13 to the base stage of Q13, makes Q13 launch the very high level of 6V left and right, and process C13 capacitance enters the signal input part 7 in Fig. 5 and Fig. 6.
Then, shake by paster signal is passed to signal receiving end 5 in Fig. 5 and Fig. 6, make signal become square wave through capacitance C14 again, the amplifying circuit that Q14 and Q15 consist of amplifies signal, through capacitance C25, pass through again the C24 rectifying and wave-filtering, then germanium tube D8 and germanium tube D9 become ultrasonic signal into main control chip and can identify d. c. voltage signal, thereby according to ultrasound wave air different with signal attenuation degree in liquid medium (they being that efficiency of transmission is different), and produce different magnitudes of voltage, judge whether to trigger main control chip and report to the police.Wherein, two diode D10 and D11 consist of holding circuit, prevent the excessive and backward voltage infringement main control chip of electric current, thereby have improved the reliability of device; In addition, in this circuit, adopt a plurality of capacitances, improved the capacity of resisting disturbance of circuit.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Claims (8)
1. bubble detection device that is used for infusion pipeline comprises:
Body (3), have by relative the first side wall (17) be connected sidewall (16) and connect described the first side wall (17) and central passage (15) that the base (20) of described the second sidewall (16) limits, have the receiving terminal (5) that has ultrasonic signal on the side away from described passage (15) of the input (7) of ultrasonic signal and described the second sidewall (16) on the side away from described central passage (15) of described the first side wall (17);
Be pressed into section (1), infusion pipeline (2) can be pressed in described central passage (15), described infusion pipeline (2) is supported by described base (20); And
Detection control circuit (8) connects described input (7) and described receiving terminal (5) judging in described infusion pipeline (2) whether have bubble,
it is characterized in that, when described infusion pipeline (2) is pressed into described central passage (15), described infusion pipeline (2) with contacted two sidewalls (18 of described central passage, 19) relative with described receiving terminal (5) with described input (7) respectively, described base (20) is along having groove (6) in the position corresponding to described input (7) and described receiving terminal (5) on the direction of described infusion pipeline (2), the length of described groove (6) greater than described input (7) and described receiving terminal (5) along the length on described infusion pipeline (2) direction.
2. the bubble detection device for infusion pipeline according to claim 1, it is characterized in that, described detection control circuit (8) comprises ultrasonic signal generating unit, ultrasonic signal receiving element and main control chip, wherein, described input (7) connects described ultrasonic signal generating unit, described receiving terminal (5) connects described ultrasonic signal receiving element, and described ultrasonic signal receiving element transfers to described main control chip with the signal that receives.
3. the bubble detection device for infusion pipeline according to claim 2, is characterized in that, described detection control circuit (8) also comprises circuit protection unit, damages described main control chip to prevent the excessive or backward voltage of electric current.
4. the bubble detection device for infusion pipeline according to claim 1, is characterized in that, described input (7) and described receiving terminal (5) are rectangular superconduction paster.
5. the bubble detection device for infusion pipeline according to claim 1, is characterized in that, the thickness of described the first side wall (17) and described the second sidewall (16) is and is not more than 0.4mm.
6. the bubble detection device for infusion pipeline according to claim 1, it is characterized in that, described the first side wall (17) and described the second sidewall (16) all adopt the process of surface treatment of meticulous polishing, with strengthen between described input (7) and described the first side wall (17) coordinate and described receiving terminal (5) and described the second sidewall (16) between coordinate.
7. the bubble detection device for infusion pipeline according to claim 1, is characterized in that, described input (7) affixes to described the first side wall (17), and described receiving terminal (5) affixes to described the second sidewall (16).
8. the bubble detection device for infusion pipeline according to claim 1, is characterized in that, the bottom of described body (3) has the installing card (4,9) that matches with fixing liner plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246777 CN101766854B (en) | 2008-12-29 | 2008-12-29 | Bubble detection device for infusion pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246777 CN101766854B (en) | 2008-12-29 | 2008-12-29 | Bubble detection device for infusion pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101766854A CN101766854A (en) | 2010-07-07 |
| CN101766854B true CN101766854B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810246777 Expired - Fee Related CN101766854B (en) | 2008-12-29 | 2008-12-29 | Bubble detection device for infusion pipeline |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266598B (en) * | 2010-12-31 | 2014-06-11 | 北京谊安医疗系统股份有限公司 | Ultrasonic sensing bubble detection device and infusion pump comprising same |
| CN102183797A (en) * | 2011-03-04 | 2011-09-14 | 西安交通大学 | Ultrasonic air bubble detection device applicable to biological microtubules |
| CN102366644A (en) * | 2011-10-23 | 2012-03-07 | 成都君晟科技有限公司 | Infusion device with automatic air embolism alarm function |
| CN108144158A (en) * | 2018-02-28 | 2018-06-12 | 刘少杰 | Transfusion control system and its infusion method |
| CN108680765B (en) * | 2018-05-16 | 2020-07-28 | 英华达（上海）科技有限公司 | Flow velocity sensing device and flow velocity sensing system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379139Y (en) * | 1999-06-18 | 2000-05-24 | 高晶敏 | Automatic infusion device having position liminating means |
| CN1394145A (en) * | 2000-11-03 | 2003-01-29 | 巴克斯特国际公司 | Air on-line sensor for flow medicinal liquid pump |
| CN2720441Y (en) * | 2004-07-09 | 2005-08-24 | 吴忠仪表股份有限公司 | Supersonic air detector |
| CN1715866A (en) * | 2001-04-16 | 2006-01-04 | 泽维克斯公司 | Optical bubble detection system |
| EP1818664A1 (en) * | 2006-02-13 | 2007-08-15 | F.Hoffmann-La Roche Ag | Device for detection of a change of pressure in a canal of a microdosing device |
-
2008
- 2008-12-29 CN CN 200810246777 patent/CN101766854B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379139Y (en) * | 1999-06-18 | 2000-05-24 | 高晶敏 | Automatic infusion device having position liminating means |
| CN1394145A (en) * | 2000-11-03 | 2003-01-29 | 巴克斯特国际公司 | Air on-line sensor for flow medicinal liquid pump |
| CN1715866A (en) * | 2001-04-16 | 2006-01-04 | 泽维克斯公司 | Optical bubble detection system |
| CN2720441Y (en) * | 2004-07-09 | 2005-08-24 | 吴忠仪表股份有限公司 | Supersonic air detector |
| EP1818664A1 (en) * | 2006-02-13 | 2007-08-15 | F.Hoffmann-La Roche Ag | Device for detection of a change of pressure in a canal of a microdosing device |
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| CN101766854A (en) | 2010-07-07 |
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Effective date of registration: 20160804 Address after: 100070, room 2, building 201, building 11B2, Fengtai District Science Town, Beijing Patentee after: Beijing Kefeng Dingcheng Asset Management Limited Address before: 100070 Fengtai Science City, Fengtai District Feng Feng Road, No. 4, No. Patentee before: Beijing Yian Medical System Co., Ltd. |
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Granted publication date: 20130508 Termination date: 20161229 |